Yes. The Catskill style is different from the "Western" or modern style found in a lot of books. The hackles could get even longer, up to 2 1/2 times the hook gap. There is also an important gap at the front of the fly between the eye and the head, which sets the wing back just a bit. The tails were longer as well, from behind the eye to the end of the bend, not shank length as is typical now. The wings were tall too, something I've never quite fully agreed with, as tall wings make a fly prone to tipping. For my own fishing I don't quite stick to the Catskill standard, tying a more compact dry in the style of Fran Betters.
Eric